gcc/builtins.def

   1 /* This file contains the definitions and documentation for the
   2    builtins used in the GNU compiler.
   3    Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22 /* Before including this file, you should define a macro:
  23
  24      DEF_BUILTIN (ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P,
  25                   FALLBACK_P, NONANSI_P, ATTRS, IMPLICIT)
  26
  27    This macro will be called once for each builtin function.  The
  28    ENUM will be of type `enum built_in_function', and will indicate
  29    which builtin function is being processed.  The NAME of the builtin
  30    function (which will always start with `__builtin_') is a string
  31    literal.  The CLASS is of type `enum built_in_class' and indicates
  32    what kind of builtin is being processed.
  33
  34    Some builtins are actually two separate functions.  For example,
  35    for `strcmp' there are two builtin functions; `__builtin_strcmp'
  36    and `strcmp' itself.  Both behave identically.  Other builtins
  37    define only the `__builtin' variant.  If BOTH_P is TRUE, then this
  38    builtin has both variants; otherwise, it is has only the first
  39    variant.
  40
  41    TYPE indicates the type of the function.  The symbols correspond to
  42    enumerals from builtin-types.def.  If BOTH_P is true, then LIBTYPE
  43    is the type of the non-`__builtin_' variant.  Otherwise, LIBTYPE
  44    should be ignored.
  45
  46    If FALLBACK_P is true then, if for some reason, the compiler cannot
  47    expand the builtin function directly, it will call the
  48    corresponding library function (which does not have the
  49    `__builtin_' prefix.
  50
  51    If NONANSI_P is true, then the non-`__builtin_' variant is not an
  52    ANSI/ISO library function, and so we should pretend it does not
  53    exist when compiling in ANSI conformant mode.
  54
  55    ATTRs is an attribute list as defined in builtin-attrs.def that
  56    describes the attributes of this builtin function.
  57
  58    IMPLICIT specifies condition when the builtin can be produced by
  59    compiler.  For instance C90 reserves floorf function, but does not
  60    define it's meaning.  When user uses floorf we may assume that the
  61    floorf has the meaning we expect, but we can't produce floorf by
  62    simplifying floor((double)float) since the runtime need not implement
  63    it.  */
  64
  65 /* A GCC builtin (like __builtin_saveregs) is provided by the
  66    compiler, but does not correspond to a function in the standard
  67    library.  */
  68 #undef DEF_GCC_BUILTIN
  69 #define DEF_GCC_BUILTIN(ENUM, NAME, TYPE, ATTRS)                \
  70   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, BT_LAST,      \
  71                false, false, false, ATTRS, true)
  72
  73
  74 /* A fallback builtin is a builtin (like __builtin_puts) that falls
  75    back to the corresopnding library function if necessary -- but
  76    for which we should not introduce the non-`__builtin' variant of
  77    the name.  */
  78 #undef DEF_FALLBACK_BUILTIN
  79 #define DEF_FALLBACK_BUILTIN(ENUM, NAME, TYPE, ATTRS)   \
  80   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  81                false, true, false, ATTRS, true)
  82
  83 /* Like DEF_FALLBACK_BUILTIN, except that the function is not one that
  84    is specified by ANSI/ISO C.  So, when we're being fully conformant
  85    we ignore the version of these builtins that does not begin with
  86    __builtin.  */
  87 #undef DEF_EXT_FALLBACK_BUILTIN
  88 #define DEF_EXT_FALLBACK_BUILTIN(ENUM, NAME, TYPE, ATTRS)       \
  89   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
  90                false, true, true, ATTRS, true)
  91
  92 /* A library builtin (like __builtin_strchr) is a builtin equivalent
  93    of an ANSI/ISO standard library function.  In addition to the
  94    `__builtin' version, we will create an ordinary version (e.g,
  95    `strchr') as well.  If we cannot compute the answer using the
  96    builtin function, we will fall back to the standard library
  97    version.  */
  98 #undef DEF_LIB_BUILTIN
  99 #define DEF_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)        \
 100   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 101                true, true, false, ATTRS, true)
 102
 103 /* Like DEF_LIB_BUILTIN, except that the function is not one that is
 104    specified by ANSI/ISO C.  So, when we're being fully conformant we
 105    ignore the version of these builtins that does not begin with
 106    __builtin.  */
 107 #undef DEF_EXT_LIB_BUILTIN
 108 #define DEF_EXT_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)    \
 109   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 110                true, true, true, ATTRS, false)
 111
 112 /* Like DEF_LIB_BUILTIN, except that the function is only a part of
 113    the standard in C99 or above.  */
 114 #undef DEF_C99_BUILTIN
 115 #define DEF_C99_BUILTIN(ENUM, NAME, TYPE, ATTRS)        \
 116   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 117                true, true, !flag_isoc99, ATTRS, TARGET_C99_FUNCTIONS)
 118
 119 /* Builtin that is specified by C99 and C90 reserve the name for future use.
 120    We can still recognize the builtin in C90 mode but we can't produce it
 121    implicitly.  */
 122 #undef DEF_C99_C90RES_BUILTIN
 123 #define DEF_C99_C90RES_BUILTIN(ENUM, NAME, TYPE, ATTRS) \
 124   DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
 125                true, true, !flag_isoc99, ATTRS, TARGET_C99_FUNCTIONS)
 126
 127 /* Like DEF_LIB_BUILTIN, except that the function is expanded in the
 128    front-end.  */
 129 #undef DEF_FRONT_END_LIB_BUILTIN
 130 #define DEF_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)      \
 131   DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE,       \
 132                true, true, false, ATTRS, true)
 133
 134 /* Like DEF_FRONT_END_LIB_BUILTIN, except that the function is not one
 135    that is specified by ANSI/ISO C.  So, when we're being fully
 136    conformant we ignore the version of these builtins that does not
 137    begin with __builtin.  */
 138 #undef DEF_EXT_FRONT_END_LIB_BUILTIN
 139 #define DEF_EXT_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE, ATTRS)  \
 140   DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE,       \
 141                true, true, true, ATTRS, true)
 142
 143 /* If SMALL_STACK is defined, then `alloca' is only defined in its
 144    `__builtin' form.  */
 145 #if SMALL_STACK
 146 DEF_FALLBACK_BUILTIN(BUILT_IN_ALLOCA,
 147                      "__builtin_alloca",
 148                      BT_FN_PTR_SIZE,
 149                      ATTR_MALLOC_NOTHROW_LIST)
 150 #else
 151 DEF_EXT_LIB_BUILTIN(BUILT_IN_ALLOCA,
 152                     "__builtin_alloca",
 153                     BT_FN_PTR_SIZE,
 154                     ATTR_MALLOC_NOTHROW_LIST)
 155 #endif
 156
 157 DEF_LIB_BUILTIN(BUILT_IN_ABS,
 158                 "__builtin_abs",
 159                 BT_FN_INT_INT,
 160                 ATTR_CONST_NOTHROW_LIST)
 161 DEF_LIB_BUILTIN(BUILT_IN_LABS,
 162                 "__builtin_labs",
 163                 BT_FN_LONG_LONG,
 164                 ATTR_CONST_NOTHROW_LIST)
 165
 166 DEF_LIB_BUILTIN(BUILT_IN_FABS,
 167                 "__builtin_fabs",
 168                 BT_FN_DOUBLE_DOUBLE,
 169                 ATTR_CONST_NOTHROW_LIST)
 170 DEF_C99_C90RES_BUILTIN(BUILT_IN_FABSF,
 171                        "__builtin_fabsf",
 172                        BT_FN_FLOAT_FLOAT,
 173                        ATTR_CONST_NOTHROW_LIST)
 174 DEF_C99_C90RES_BUILTIN(BUILT_IN_FABSL,
 175                        "__builtin_fabsl",
 176                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 177                        ATTR_CONST_NOTHROW_LIST)
 178
 179 DEF_LIB_BUILTIN(BUILT_IN_FLOOR,
 180                 "__builtin_floor",
 181                 BT_FN_DOUBLE_DOUBLE,
 182                 ATTR_CONST_NOTHROW_LIST)
 183 DEF_C99_C90RES_BUILTIN(BUILT_IN_FLOORF,
 184                        "__builtin_floorf",
 185                        BT_FN_FLOAT_FLOAT,
 186                        ATTR_CONST_NOTHROW_LIST)
 187 DEF_C99_C90RES_BUILTIN(BUILT_IN_FLOORL,
 188                        "__builtin_floorl",
 189                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 190                        ATTR_CONST_NOTHROW_LIST)
 191
 192 DEF_LIB_BUILTIN(BUILT_IN_CEIL,
 193                 "__builtin_ceil",
 194                 BT_FN_DOUBLE_DOUBLE,
 195                 ATTR_CONST_NOTHROW_LIST)
 196 DEF_C99_C90RES_BUILTIN(BUILT_IN_CEILF,
 197                        "__builtin_ceilf",
 198                        BT_FN_FLOAT_FLOAT,
 199                        ATTR_CONST_NOTHROW_LIST)
 200 DEF_C99_C90RES_BUILTIN(BUILT_IN_CEILL,
 201                        "__builtin_ceill",
 202                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 203                        ATTR_CONST_NOTHROW_LIST)
 204
 205 DEF_C99_BUILTIN(BUILT_IN_ROUND,
 206                 "__builtin_round",
 207                 BT_FN_DOUBLE_DOUBLE,
 208                 ATTR_CONST_NOTHROW_LIST)
 209 DEF_C99_BUILTIN(BUILT_IN_ROUNDF,
 210                 "__builtin_roundf",
 211                 BT_FN_FLOAT_FLOAT,
 212                 ATTR_CONST_NOTHROW_LIST)
 213 DEF_C99_BUILTIN(BUILT_IN_ROUNDL,
 214                 "__builtin_roundl",
 215                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 216                 ATTR_CONST_NOTHROW_LIST)
 217
 218 DEF_C99_BUILTIN(BUILT_IN_TRUNC,
 219                 "__builtin_trunc",
 220                 BT_FN_DOUBLE_DOUBLE,
 221                 ATTR_CONST_NOTHROW_LIST)
 222 DEF_C99_BUILTIN(BUILT_IN_TRUNCF,
 223                 "__builtin_truncf",
 224                 BT_FN_FLOAT_FLOAT,
 225                 ATTR_CONST_NOTHROW_LIST)
 226 DEF_C99_BUILTIN(BUILT_IN_TRUNCL,
 227                 "__builtin_truncl",
 228                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 229                 ATTR_CONST_NOTHROW_LIST)
 230
 231 DEF_C99_BUILTIN(BUILT_IN_NEARBYINT,
 232                 "__builtin_nearbyint",
 233                 BT_FN_DOUBLE_DOUBLE,
 234                 ATTR_CONST_NOTHROW_LIST)
 235 DEF_C99_BUILTIN(BUILT_IN_NEARBYINTF,
 236                 "__builtin_nearbyintf",
 237                 BT_FN_FLOAT_FLOAT,
 238                 ATTR_CONST_NOTHROW_LIST)
 239 DEF_C99_BUILTIN(BUILT_IN_NEARBYINTL,
 240                 "__builtin_nearbyintl",
 241                 BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 242                 ATTR_CONST_NOTHROW_LIST)
 243
 244 DEF_C99_BUILTIN(BUILT_IN_LLABS,
 245                 "__builtin_llabs",
 246                 BT_FN_LONGLONG_LONGLONG,
 247                 ATTR_CONST_NOTHROW_LIST)
 248 DEF_C99_BUILTIN(BUILT_IN_IMAXABS,
 249                 "__builtin_imaxabs",
 250                 BT_FN_INTMAX_INTMAX,
 251                 ATTR_CONST_NOTHROW_LIST)
 252 DEF_C99_BUILTIN(BUILT_IN_CONJ,
 253                 "__builtin_conj",
 254                 BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
 255                 ATTR_CONST_NOTHROW_LIST)
 256 DEF_C99_BUILTIN(BUILT_IN_CONJF,
 257                 "__builtin_conjf",
 258                 BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT,
 259                 ATTR_CONST_NOTHROW_LIST)
 260 DEF_C99_BUILTIN(BUILT_IN_CONJL,
 261                 "__builtin_conjl",
 262                 BT_FN_COMPLEX_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 263                 ATTR_CONST_NOTHROW_LIST)
 264 DEF_C99_BUILTIN(BUILT_IN_CREAL,
 265                 "__builtin_creal",
 266                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 267                 ATTR_CONST_NOTHROW_LIST)
 268 DEF_C99_BUILTIN(BUILT_IN_CREALF,
 269                 "__builtin_crealf",
 270                 BT_FN_FLOAT_COMPLEX_FLOAT,
 271                 ATTR_CONST_NOTHROW_LIST)
 272 DEF_C99_BUILTIN(BUILT_IN_CREALL,
 273                 "__builtin_creall",
 274                 BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 275                 ATTR_CONST_NOTHROW_LIST)
 276 DEF_C99_BUILTIN(BUILT_IN_CIMAG,
 277                 "__builtin_cimag",
 278                 BT_FN_DOUBLE_COMPLEX_DOUBLE,
 279                 ATTR_CONST_NOTHROW_LIST)
 280 DEF_C99_BUILTIN(BUILT_IN_CIMAGF,
 281                 "__builtin_cimagf",
 282                 BT_FN_FLOAT_COMPLEX_FLOAT,
 283                 ATTR_CONST_NOTHROW_LIST)
 284 DEF_C99_BUILTIN(BUILT_IN_CIMAGL,
 285                 "__builtin_cimagl",
 286                 BT_FN_LONG_DOUBLE_COMPLEX_LONG_DOUBLE,
 287                 ATTR_CONST_NOTHROW_LIST)
 288
 289 /* The system prototypes for `bzero', 'bcopy' and `bcmp' functions
 290    have many variations, so don't specify parameters to avoid
 291    conflicts.  The expand_* functions check the argument types anyway.
 292    In addition, these functions have traditionally accepted NULL
 293    pointers when the length parameter is zero, so don't apply
 294    attribute "nonnull".  */
 295 DEF_BUILTIN (BUILT_IN_BZERO,
 296              "__builtin_bzero",
 297              BUILT_IN_NORMAL,
 298              BT_FN_VOID_PTR_SIZE,
 299              BT_FN_VOID_VAR,
 300              true, true, true,
 301              ATTR_NOTHROW_LIST, false)
 302 DEF_BUILTIN (BUILT_IN_BCOPY,
 303              "__builtin_bcopy",
 304              BUILT_IN_NORMAL,
 305              BT_FN_VOID_CONST_PTR_PTR_SIZE,
 306              BT_FN_VOID_VAR,
 307              true, true, true,
 308              ATTR_NOTHROW_LIST, false)
 309 DEF_BUILTIN (BUILT_IN_BCMP,
 310              "__builtin_bcmp",
 311              BUILT_IN_NORMAL,
 312              BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 313              BT_FN_INT_VAR,
 314              true, true, true,
 315              ATTR_PURE_NOTHROW_LIST, false)
 316
 317 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFS,
 318                     "__builtin_ffs",
 319                     BT_FN_INT_INT,
 320                     ATTR_CONST_NOTHROW_LIST)
 321 DEF_GCC_BUILTIN(BUILT_IN_CLZ,
 322                     "__builtin_clz",
 323                     BT_FN_INT_INT,
 324                     ATTR_CONST_NOTHROW_LIST)
 325 DEF_GCC_BUILTIN(BUILT_IN_CTZ,
 326                     "__builtin_ctz",
 327                     BT_FN_INT_INT,
 328                     ATTR_CONST_NOTHROW_LIST)
 329 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNT,
 330                     "__builtin_popcount",
 331                     BT_FN_INT_INT,
 332                     ATTR_CONST_NOTHROW_LIST)
 333 DEF_GCC_BUILTIN(BUILT_IN_PARITY,
 334                     "__builtin_parity",
 335                     BT_FN_INT_INT,
 336                     ATTR_CONST_NOTHROW_LIST)
 337
 338 DEF_GCC_BUILTIN(BUILT_IN_FFSL,
 339                     "__builtin_ffsl",
 340                     BT_FN_INT_LONG,
 341                     ATTR_CONST_NOTHROW_LIST)
 342 DEF_GCC_BUILTIN(BUILT_IN_CLZL,
 343                     "__builtin_clzl",
 344                     BT_FN_INT_LONG,
 345                     ATTR_CONST_NOTHROW_LIST)
 346 DEF_GCC_BUILTIN(BUILT_IN_CTZL,
 347                     "__builtin_ctzl",
 348                     BT_FN_INT_LONG,
 349                     ATTR_CONST_NOTHROW_LIST)
 350 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTL,
 351                     "__builtin_popcountl",
 352                     BT_FN_INT_LONG,
 353                     ATTR_CONST_NOTHROW_LIST)
 354 DEF_GCC_BUILTIN(BUILT_IN_PARITYL,
 355                     "__builtin_parityl",
 356                     BT_FN_INT_LONG,
 357                     ATTR_CONST_NOTHROW_LIST)
 358
 359 DEF_EXT_LIB_BUILTIN(BUILT_IN_FFSLL,
 360                     "__builtin_ffsll",
 361                     BT_FN_INT_LONGLONG,
 362                     ATTR_CONST_NOTHROW_LIST)
 363 DEF_GCC_BUILTIN(BUILT_IN_CLZLL,
 364                     "__builtin_clzll",
 365                     BT_FN_INT_LONGLONG,
 366                     ATTR_CONST_NOTHROW_LIST)
 367 DEF_GCC_BUILTIN(BUILT_IN_CTZLL,
 368                     "__builtin_ctzll",
 369                     BT_FN_INT_LONGLONG,
 370                     ATTR_CONST_NOTHROW_LIST)
 371 DEF_GCC_BUILTIN(BUILT_IN_POPCOUNTLL,
 372                     "__builtin_popcountll",
 373                     BT_FN_INT_LONGLONG,
 374                     ATTR_CONST_NOTHROW_LIST)
 375 DEF_GCC_BUILTIN(BUILT_IN_PARITYLL,
 376                     "__builtin_parityll",
 377                     BT_FN_INT_LONGLONG,
 378                     ATTR_CONST_NOTHROW_LIST)
 379
 380 DEF_EXT_LIB_BUILTIN(BUILT_IN_INDEX,
 381                     "__builtin_index",
 382                     BT_FN_STRING_CONST_STRING_INT,
 383                     ATTR_PURE_NOTHROW_NONNULL_1)
 384 DEF_EXT_LIB_BUILTIN(BUILT_IN_RINDEX,
 385                     "__builtin_rindex",
 386                     BT_FN_STRING_CONST_STRING_INT,
 387                     ATTR_PURE_NOTHROW_NONNULL_1)
 388
 389 DEF_LIB_BUILTIN(BUILT_IN_MEMCPY,
 390                 "__builtin_memcpy",
 391                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 392                 ATTR_NOTHROW_NONNULL_1_2)
 393 DEF_LIB_BUILTIN(BUILT_IN_MEMMOVE,
 394                 "__builtin_memmove",
 395                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 396                 ATTR_NOTHROW_NONNULL_1_2)
 397 DEF_LIB_BUILTIN(BUILT_IN_MEMCMP,
 398                 "__builtin_memcmp",
 399                 BT_FN_INT_CONST_PTR_CONST_PTR_SIZE,
 400                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 401 DEF_LIB_BUILTIN(BUILT_IN_MEMSET,
 402                 "__builtin_memset",
 403                 BT_FN_PTR_PTR_INT_SIZE,
 404                 ATTR_NOTHROW_NONNULL_1)
 405 DEF_EXT_LIB_BUILTIN(BUILT_IN_MEMPCPY,
 406                 "__builtin_mempcpy",
 407                 BT_FN_PTR_PTR_CONST_PTR_SIZE,
 408                 ATTR_NOTHROW_NONNULL_1_2)
 409
 410 DEF_LIB_BUILTIN(BUILT_IN_STRCAT,
 411                 "__builtin_strcat",
 412                 BT_FN_STRING_STRING_CONST_STRING,
 413                 ATTR_NOTHROW_NONNULL_1_2)
 414 DEF_LIB_BUILTIN(BUILT_IN_STRNCAT,
 415                 "__builtin_strncat",
 416                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 417                 ATTR_NOTHROW_NONNULL_1_2)
 418 DEF_EXT_LIB_BUILTIN(BUILT_IN_STPCPY,
 419                 "__builtin_stpcpy",
 420                 BT_FN_STRING_STRING_CONST_STRING,
 421                 ATTR_NOTHROW_NONNULL_1_2)
 422 DEF_LIB_BUILTIN(BUILT_IN_STRCPY,
 423                 "__builtin_strcpy",
 424                 BT_FN_STRING_STRING_CONST_STRING,
 425                 ATTR_NOTHROW_NONNULL_1_2)
 426 DEF_LIB_BUILTIN(BUILT_IN_STRNCPY,
 427                 "__builtin_strncpy",
 428                 BT_FN_STRING_STRING_CONST_STRING_SIZE,
 429                 ATTR_NOTHROW_NONNULL_1_2)
 430 DEF_LIB_BUILTIN(BUILT_IN_STRCMP,
 431                 "__builtin_strcmp",
 432                 BT_FN_INT_CONST_STRING_CONST_STRING,
 433                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 434 DEF_LIB_BUILTIN(BUILT_IN_STRNCMP,
 435                 "__builtin_strncmp",
 436                 BT_FN_INT_CONST_STRING_CONST_STRING_SIZE,
 437                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 438 DEF_LIB_BUILTIN(BUILT_IN_STRLEN,
 439                 "__builtin_strlen",
 440                 BT_FN_SIZE_CONST_STRING,
 441                 ATTR_PURE_NOTHROW_NONNULL_1)
 442 DEF_LIB_BUILTIN(BUILT_IN_STRSTR,
 443                 "__builtin_strstr",
 444                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 445                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 446 DEF_LIB_BUILTIN(BUILT_IN_STRPBRK,
 447                 "__builtin_strpbrk",
 448                 BT_FN_STRING_CONST_STRING_CONST_STRING,
 449                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 450 DEF_LIB_BUILTIN(BUILT_IN_STRSPN,
 451                 "__builtin_strspn",
 452                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 453                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 454 DEF_LIB_BUILTIN(BUILT_IN_STRCSPN,
 455                 "__builtin_strcspn",
 456                 BT_FN_SIZE_CONST_STRING_CONST_STRING,
 457                 ATTR_PURE_NOTHROW_NONNULL_1_2)
 458 DEF_LIB_BUILTIN(BUILT_IN_STRCHR,
 459                 "__builtin_strchr",
 460                 BT_FN_STRING_CONST_STRING_INT,
 461                 ATTR_PURE_NOTHROW_NONNULL_1)
 462 DEF_LIB_BUILTIN(BUILT_IN_STRRCHR,
 463                 "__builtin_strrchr",
 464                 BT_FN_STRING_CONST_STRING_INT,
 465                 ATTR_PURE_NOTHROW_NONNULL_1)
 466
 467 DEF_LIB_BUILTIN(BUILT_IN_SQRT,
 468                 "__builtin_sqrt",
 469                 BT_FN_DOUBLE_DOUBLE,
 470                 flag_errno_math ? ATTR_NOTHROW_LIST
 471                                 : (flag_unsafe_math_optimizations
 472                                    ? ATTR_CONST_NOTHROW_LIST
 473                                    : ATTR_PURE_NOTHROW_LIST))
 474 DEF_LIB_BUILTIN(BUILT_IN_SIN,
 475                 "__builtin_sin",
 476                 BT_FN_DOUBLE_DOUBLE,
 477                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 478                                                : ATTR_PURE_NOTHROW_LIST)
 479 DEF_LIB_BUILTIN(BUILT_IN_COS,
 480                 "__builtin_cos",
 481                 BT_FN_DOUBLE_DOUBLE,
 482                 flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 483                                                : ATTR_PURE_NOTHROW_LIST)
 484 DEF_LIB_BUILTIN(BUILT_IN_EXP,
 485                 "__builtin_exp",
 486                 BT_FN_DOUBLE_DOUBLE,
 487                 flag_errno_math ? ATTR_NOTHROW_LIST
 488                                 : (flag_unsafe_math_optimizations
 489                                    ? ATTR_CONST_NOTHROW_LIST
 490                                    : ATTR_PURE_NOTHROW_LIST))
 491 DEF_LIB_BUILTIN(BUILT_IN_LOG,
 492                 "__builtin_log",
 493                 BT_FN_DOUBLE_DOUBLE,
 494                 flag_errno_math ? ATTR_NOTHROW_LIST
 495                                 : (flag_unsafe_math_optimizations
 496                                    ? ATTR_CONST_NOTHROW_LIST
 497                                    : ATTR_PURE_NOTHROW_LIST))
 498 DEF_LIB_BUILTIN(BUILT_IN_POW,
 499                 "__builtin_pow",
 500                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 501                 flag_errno_math ? ATTR_NOTHROW_LIST
 502                                 : (flag_unsafe_math_optimizations
 503                                    ? ATTR_CONST_NOTHROW_LIST
 504                                    : ATTR_PURE_NOTHROW_LIST))
 505 DEF_LIB_BUILTIN(BUILT_IN_ATAN2,
 506                 "__builtin_atan2",
 507                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 508                 flag_errno_math ? ATTR_NOTHROW_LIST
 509                                 : (flag_unsafe_math_optimizations
 510                                    ? ATTR_CONST_NOTHROW_LIST
 511                                    : ATTR_PURE_NOTHROW_LIST))
 512 DEF_LIB_BUILTIN(BUILT_IN_FMOD,
 513                 "__builtin_fmod",
 514                 BT_FN_DOUBLE_DOUBLE_DOUBLE,
 515                 flag_errno_math ? ATTR_NOTHROW_LIST
 516                                 : (flag_unsafe_math_optimizations
 517                                    ? ATTR_CONST_NOTHROW_LIST
 518                                    : ATTR_PURE_NOTHROW_LIST))
 519 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTF,
 520                        "__builtin_sqrtf",
 521                        BT_FN_FLOAT_FLOAT,
 522                        flag_errno_math ? ATTR_NOTHROW_LIST
 523                                        : (flag_unsafe_math_optimizations
 524                                           ? ATTR_CONST_NOTHROW_LIST
 525                                           : ATTR_PURE_NOTHROW_LIST))
 526 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINF,
 527                        "__builtin_sinf",
 528                        BT_FN_FLOAT_FLOAT,
 529                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 530                                                       : ATTR_PURE_NOTHROW_LIST)
 531 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSF,
 532                        "__builtin_cosf",
 533                        BT_FN_FLOAT_FLOAT,
 534                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 535                                                       : ATTR_PURE_NOTHROW_LIST)
 536 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPF,
 537                        "__builtin_expf",
 538                        BT_FN_FLOAT_FLOAT,
 539                        flag_errno_math ? ATTR_NOTHROW_LIST
 540                                        : (flag_unsafe_math_optimizations
 541                                           ? ATTR_CONST_NOTHROW_LIST
 542                                           : ATTR_PURE_NOTHROW_LIST))
 543 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGF,
 544                        "__builtin_logf",
 545                        BT_FN_FLOAT_FLOAT,
 546                        flag_errno_math ? ATTR_NOTHROW_LIST
 547                                        : (flag_unsafe_math_optimizations
 548                                           ? ATTR_CONST_NOTHROW_LIST
 549                                           : ATTR_PURE_NOTHROW_LIST))
 550 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWF,
 551                        "__builtin_powf",
 552                        BT_FN_FLOAT_FLOAT_FLOAT,
 553                        flag_errno_math ? ATTR_NOTHROW_LIST
 554                                        : (flag_unsafe_math_optimizations
 555                                           ? ATTR_CONST_NOTHROW_LIST
 556                                           : ATTR_PURE_NOTHROW_LIST))
 557 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2F,
 558                        "__builtin_atan2f",
 559                        BT_FN_FLOAT_FLOAT_FLOAT,
 560                        flag_errno_math ? ATTR_NOTHROW_LIST
 561                                        : (flag_unsafe_math_optimizations
 562                                           ? ATTR_CONST_NOTHROW_LIST
 563                                           : ATTR_PURE_NOTHROW_LIST))
 564 DEF_C99_C90RES_BUILTIN(BUILT_IN_FMODF,
 565                        "__builtin_fmodf",
 566                        BT_FN_FLOAT_FLOAT_FLOAT,
 567                        flag_errno_math ? ATTR_NOTHROW_LIST
 568                                        : (flag_unsafe_math_optimizations
 569                                           ? ATTR_CONST_NOTHROW_LIST
 570                                           : ATTR_PURE_NOTHROW_LIST))
 571 DEF_C99_C90RES_BUILTIN(BUILT_IN_SQRTL,
 572                        "__builtin_sqrtl",
 573                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 574                        flag_errno_math ? ATTR_NOTHROW_LIST
 575                                        : (flag_unsafe_math_optimizations
 576                                           ? ATTR_CONST_NOTHROW_LIST
 577                                           : ATTR_PURE_NOTHROW_LIST))
 578 DEF_C99_C90RES_BUILTIN(BUILT_IN_SINL,
 579                        "__builtin_sinl",
 580                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 581                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 582                                                       : ATTR_PURE_NOTHROW_LIST)
 583 DEF_C99_C90RES_BUILTIN(BUILT_IN_COSL,
 584                        "__builtin_cosl",
 585                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 586                        flag_unsafe_math_optimizations ? ATTR_CONST_NOTHROW_LIST
 587                                                       : ATTR_PURE_NOTHROW_LIST)
 588 DEF_C99_C90RES_BUILTIN(BUILT_IN_EXPL,
 589                        "__builtin_expl",
 590                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 591                        flag_errno_math ? ATTR_NOTHROW_LIST
 592                                        : (flag_unsafe_math_optimizations
 593                                           ? ATTR_CONST_NOTHROW_LIST
 594                                           : ATTR_PURE_NOTHROW_LIST))
 595 DEF_C99_C90RES_BUILTIN(BUILT_IN_LOGL,
 596                        "__builtin_logl",
 597                        BT_FN_LONG_DOUBLE_LONG_DOUBLE,
 598                        flag_errno_math ? ATTR_NOTHROW_LIST
 599                                        : (flag_unsafe_math_optimizations
 600                                           ? ATTR_CONST_NOTHROW_LIST
 601                                           : ATTR_PURE_NOTHROW_LIST))
 602 DEF_C99_C90RES_BUILTIN(BUILT_IN_POWL,
 603                        "__builtin_powl",
 604                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 605                        flag_errno_math ? ATTR_NOTHROW_LIST
 606                                        : (flag_unsafe_math_optimizations
 607                                           ? ATTR_CONST_NOTHROW_LIST
 608                                           : ATTR_PURE_NOTHROW_LIST))
 609 DEF_C99_C90RES_BUILTIN(BUILT_IN_ATAN2L,
 610                        "__builtin_atan2l",
 611                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 612                        flag_errno_math ? ATTR_NOTHROW_LIST
 613                                        : (flag_unsafe_math_optimizations
 614                                           ? ATTR_CONST_NOTHROW_LIST
 615                                           : ATTR_PURE_NOTHROW_LIST))
 616 DEF_C99_C90RES_BUILTIN(BUILT_IN_FMODL,
 617                        "__builtin_fmodl",
 618                        BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE,
 619                        flag_errno_math ? ATTR_NOTHROW_LIST
 620                                        : (flag_unsafe_math_optimizations
 621                                           ? ATTR_CONST_NOTHROW_LIST
 622                                           : ATTR_PURE_NOTHROW_LIST))
 623
 624 DEF_GCC_BUILTIN(BUILT_IN_INF,
 625                 "__builtin_inf",
 626                 BT_FN_DOUBLE,
 627                 ATTR_CONST_NOTHROW_LIST)
 628 DEF_GCC_BUILTIN(BUILT_IN_INFF,
 629                 "__builtin_inff",
 630                 BT_FN_FLOAT,
 631                 ATTR_CONST_NOTHROW_LIST)
 632 DEF_GCC_BUILTIN(BUILT_IN_INFL,
 633                 "__builtin_infl",
 634                 BT_FN_LONG_DOUBLE,
 635                 ATTR_CONST_NOTHROW_LIST)
 636
 637 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VAL,
 638                 "__builtin_huge_val",
 639                 BT_FN_DOUBLE,
 640                 ATTR_CONST_NOTHROW_LIST)
 641 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALF,
 642                 "__builtin_huge_valf",
 643                 BT_FN_FLOAT,
 644                 ATTR_CONST_NOTHROW_LIST)
 645 DEF_GCC_BUILTIN(BUILT_IN_HUGE_VALL,
 646                 "__builtin_huge_vall",
 647                 BT_FN_LONG_DOUBLE,
 648                 ATTR_CONST_NOTHROW_LIST)
 649
 650 DEF_LIB_BUILTIN(BUILT_IN_NAN,
 651                 "__builtin_nan",
 652                 BT_FN_DOUBLE_CONST_STRING,
 653                 ATTR_CONST_NOTHROW_NONNULL_1)
 654 DEF_LIB_BUILTIN(BUILT_IN_NANF,
 655                 "__builtin_nanf",
 656                 BT_FN_FLOAT_CONST_STRING,
 657                 ATTR_CONST_NOTHROW_NONNULL_1)
 658 DEF_LIB_BUILTIN(BUILT_IN_NANL,
 659                 "__builtin_nanl",
 660                 BT_FN_LONG_DOUBLE_CONST_STRING,
 661                 ATTR_CONST_NOTHROW_NONNULL_1)
 662
 663 DEF_LIB_BUILTIN(BUILT_IN_NANS,
 664                 "__builtin_nans",
 665                 BT_FN_DOUBLE_CONST_STRING,
 666                 ATTR_CONST_NOTHROW_NONNULL_1)
 667 DEF_LIB_BUILTIN(BUILT_IN_NANSF,
 668                 "__builtin_nansf",
 669                 BT_FN_FLOAT_CONST_STRING,
 670                 ATTR_CONST_NOTHROW_NONNULL_1)
 671 DEF_LIB_BUILTIN(BUILT_IN_NANSL,
 672                 "__builtin_nansl",
 673                 BT_FN_LONG_DOUBLE_CONST_STRING,
 674                 ATTR_CONST_NOTHROW_NONNULL_1)
 675
 676 DEF_GCC_BUILTIN(BUILT_IN_SAVEREGS,
 677                 "__builtin_saveregs",
 678                 BT_FN_PTR_VAR,
 679                 ATTR_NULL)
 680 DEF_GCC_BUILTIN(BUILT_IN_CLASSIFY_TYPE,
 681                 "__builtin_classify_type",
 682                 BT_FN_INT_VAR,
 683                 ATTR_NULL)
 684 DEF_GCC_BUILTIN(BUILT_IN_NEXT_ARG,
 685                 "__builtin_next_arg",
 686                 BT_FN_PTR_VAR,
 687                 ATTR_NULL)
 688 DEF_GCC_BUILTIN(BUILT_IN_ARGS_INFO,
 689                 "__builtin_args_info",
 690                 BT_FN_INT_INT,
 691                 ATTR_NULL)
 692 DEF_GCC_BUILTIN(BUILT_IN_CONSTANT_P,
 693                 "__builtin_constant_p",
 694                 BT_FN_INT_VAR,
 695                 ATTR_CONST_NOTHROW_LIST)
 696 DEF_GCC_BUILTIN(BUILT_IN_FRAME_ADDRESS,
 697                 "__builtin_frame_address",
 698                 BT_FN_PTR_UNSIGNED,
 699                 ATTR_NULL)
 700 DEF_GCC_BUILTIN(BUILT_IN_RETURN_ADDRESS,
 701                 "__builtin_return_address",
 702                 BT_FN_PTR_UNSIGNED,
 703                 ATTR_NULL)
 704 DEF_GCC_BUILTIN(BUILT_IN_AGGREGATE_INCOMING_ADDRESS,
 705                 "__builtin_aggregate_incoming_address",
 706                 BT_FN_PTR_VAR,
 707                 ATTR_NULL)
 708 DEF_GCC_BUILTIN(BUILT_IN_APPLY_ARGS,
 709                 "__builtin_apply_args",
 710                 BT_FN_PTR_VAR,
 711                 ATTR_NULL)
 712 DEF_GCC_BUILTIN(BUILT_IN_APPLY,
 713                 "__builtin_apply",
 714                 BT_FN_PTR_PTR_FN_VOID_VAR_PTR_SIZE,
 715                 ATTR_NULL)
 716 DEF_GCC_BUILTIN(BUILT_IN_RETURN,
 717                 "__builtin_return",
 718                 BT_FN_VOID_PTR,
 719                 ATTR_NORETURN_NOTHROW_LIST)
 720 DEF_GCC_BUILTIN(BUILT_IN_SETJMP,
 721                 "__builtin_setjmp",
 722                 BT_FN_INT_PTR,
 723                 ATTR_NULL)
 724 DEF_GCC_BUILTIN(BUILT_IN_LONGJMP,
 725                 "__builtin_longjmp",
 726                 BT_FN_VOID_PTR_INT,
 727                 ATTR_NORETURN_NOTHROW_LIST)
 728 DEF_GCC_BUILTIN(BUILT_IN_TRAP,
 729                 "__builtin_trap",
 730                 BT_FN_VOID,
 731                 ATTR_NORETURN_NOTHROW_LIST)
 732 DEF_GCC_BUILTIN(BUILT_IN_PREFETCH,
 733                 "__builtin_prefetch",
 734                 BT_FN_VOID_CONST_PTR_VAR,
 735                 ATTR_NULL)
 736
 737 /* stdio.h builtins (without FILE *).  */
 738
 739 DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF,
 740                           "__builtin_printf",
 741                           BT_FN_INT_CONST_STRING_VAR,
 742                           ATTR_FORMAT_PRINTF_1_2)
 743 DEF_LIB_BUILTIN(BUILT_IN_PUTCHAR,
 744                 "__builtin_putchar",
 745                 BT_FN_INT_INT,
 746                 ATTR_NOTHROW_LIST)
 747 DEF_LIB_BUILTIN(BUILT_IN_PUTS,
 748                 "__builtin_puts",
 749                 BT_FN_INT_CONST_STRING,
 750                 ATTR_NOTHROW_NONNULL_1)
 751 DEF_C99_BUILTIN(BUILT_IN_SNPRINTF,
 752                 "__builtin_snprintf",
 753                 BT_FN_INT_STRING_SIZE_CONST_STRING_VAR,
 754                 ATTR_FORMAT_PRINTF_3_4)
 755 DEF_LIB_BUILTIN(BUILT_IN_SPRINTF,
 756                 "__builtin_sprintf",
 757                 BT_FN_INT_STRING_CONST_STRING_VAR,
 758                 ATTR_FORMAT_PRINTF_2_3)
 759 DEF_LIB_BUILTIN(BUILT_IN_SCANF,
 760                 "__builtin_scanf",
 761                 BT_FN_INT_CONST_STRING_VAR,
 762                 ATTR_FORMAT_SCANF_1_2)
 763 DEF_LIB_BUILTIN(BUILT_IN_SSCANF,
 764                 "__builtin_sscanf",
 765                 BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
 766                 ATTR_FORMAT_SCANF_2_3)
 767 DEF_LIB_BUILTIN(BUILT_IN_VPRINTF,
 768                 "__builtin_vprintf",
 769                 BT_FN_INT_CONST_STRING_VALIST_ARG,
 770                 ATTR_FORMAT_PRINTF_1_0)
 771 DEF_C99_BUILTIN(BUILT_IN_VSCANF,
 772                 "__builtin_vscanf",
 773                 BT_FN_INT_CONST_STRING_VALIST_ARG,
 774                 ATTR_FORMAT_SCANF_1_0)
 775 DEF_C99_BUILTIN(BUILT_IN_VSSCANF,
 776                 "__builtin_vsscanf",
 777                 BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
 778                 ATTR_FORMAT_SCANF_2_0)
 779 DEF_C99_BUILTIN(BUILT_IN_VSNPRINTF,
 780                 "__builtin_vsnprintf",
 781                 BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
 782                 ATTR_FORMAT_PRINTF_3_0)
 783 DEF_LIB_BUILTIN(BUILT_IN_VSPRINTF,
 784                 "__builtin_vsprintf",
 785                 BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
 786                 ATTR_FORMAT_PRINTF_2_0)
 787
 788
 789 /* stdio.h builtins (with FILE *).  */
 790
 791 /* Declare the __builtin_ style with arguments and the regular style
 792    without them.  We rely on stdio.h to supply the arguments for the
 793    regular style declaration since we had to use void* instead of
 794    FILE* in the __builtin_ prototype supplied here.  */
 795
 796 DEF_FALLBACK_BUILTIN(BUILT_IN_FPUTC,
 797                      "__builtin_fputc",
 798                      BT_FN_INT_INT_PTR,
 799                      ATTR_NOTHROW_NONNULL_2)
 800 DEF_BUILTIN (BUILT_IN_FPUTS,
 801              "__builtin_fputs",
 802              BUILT_IN_NORMAL,
 803              BT_FN_INT_CONST_STRING_PTR,
 804              BT_FN_INT_VAR,
 805              true, true, false, ATTR_NOTHROW_NONNULL_1_2, true)
 806 DEF_FALLBACK_BUILTIN(BUILT_IN_FWRITE,
 807                      "__builtin_fwrite",
 808                      BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR,
 809                       ATTR_NOTHROW_NONNULL_1_4)
 810 DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF,
 811                          "__builtin_fprintf",
 812                          BT_FN_INT_PTR_CONST_STRING_VAR,
 813                          ATTR_FORMAT_PRINTF_2_3)
 814
 815 /* stdio unlocked builtins (without FILE *).  */
 816
 817 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTCHAR_UNLOCKED,
 818                          "__builtin_putchar_unlocked",
 819                          BT_FN_INT_INT, ATTR_NOTHROW_LIST)
 820 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTS_UNLOCKED,
 821                          "__builtin_puts_unlocked",
 822                          BT_FN_INT_CONST_STRING, ATTR_NOTHROW_NONNULL_1)
 823 DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF_UNLOCKED,
 824                               "__builtin_printf_unlocked",
 825                               BT_FN_INT_CONST_STRING_VAR,
 826                               ATTR_FORMAT_PRINTF_1_2)
 827
 828 /* stdio unlocked builtins (with FILE *).  */
 829
 830 /* Declare the __builtin_ style with arguments and the regular style
 831    without them.  We rely on stdio.h to supply the arguments for the
 832    regular style declaration since we had to use void* instead of
 833    FILE* in the __builtin_ prototype supplied here.  */
 834
 835 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FPUTC_UNLOCKED,
 836                          "__builtin_fputc_unlocked",
 837                          BT_FN_INT_INT_PTR, ATTR_NOTHROW_NONNULL_2)
 838 DEF_BUILTIN (BUILT_IN_FPUTS_UNLOCKED,
 839              "__builtin_fputs_unlocked",
 840              BUILT_IN_NORMAL,
 841              BT_FN_INT_CONST_STRING_PTR,
 842              BT_FN_INT_VAR,
 843              true, true, true, ATTR_NOTHROW_NONNULL_1_2, true)
 844 DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FWRITE_UNLOCKED,
 845                          "__builtin_fwrite_unlocked",
 846                          BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR, ATTR_NOTHROW_NONNULL_1_4)
 847 DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF_UNLOCKED,
 848                               "__builtin_fprintf_unlocked",
 849                               BT_FN_INT_PTR_CONST_STRING_VAR,
 850                               ATTR_FORMAT_PRINTF_2_3)
 851
 852   /* ISO C99 floating point unordered comparisons.  */
 853 DEF_GCC_BUILTIN(BUILT_IN_ISGREATER,
 854                 "__builtin_isgreater",
 855                 BT_FN_INT_VAR,
 856                 ATTR_CONST_NOTHROW_LIST)
 857 DEF_GCC_BUILTIN(BUILT_IN_ISGREATEREQUAL,
 858                 "__builtin_isgreaterequal",
 859                 BT_FN_INT_VAR,
 860                 ATTR_CONST_NOTHROW_LIST)
 861 DEF_GCC_BUILTIN(BUILT_IN_ISLESS,
 862                 "__builtin_isless",
 863                 BT_FN_INT_VAR,
 864                 ATTR_CONST_NOTHROW_LIST)
 865 DEF_GCC_BUILTIN(BUILT_IN_ISLESSEQUAL,
 866                 "__builtin_islessequal",
 867                 BT_FN_INT_VAR,
 868                 ATTR_CONST_NOTHROW_LIST)
 869 DEF_GCC_BUILTIN(BUILT_IN_ISLESSGREATER,
 870                 "__builtin_islessgreater",
 871                 BT_FN_INT_VAR,
 872                 ATTR_CONST_NOTHROW_LIST)
 873 DEF_GCC_BUILTIN(BUILT_IN_ISUNORDERED,
 874                 "__builtin_isunordered",
 875                 BT_FN_INT_VAR,
 876                 ATTR_CONST_NOTHROW_LIST)
 877
 878 /* Various hooks for the DWARF 2 __throw routine.  */
 879 DEF_GCC_BUILTIN(BUILT_IN_UNWIND_INIT,
 880                 "__builtin_unwind_init",
 881                 BT_FN_VOID,
 882                 ATTR_NULL)
 883 DEF_GCC_BUILTIN(BUILT_IN_DWARF_CFA,
 884                 "__builtin_dwarf_cfa",
 885                 BT_FN_PTR,
 886                 ATTR_NULL)
 887 DEF_GCC_BUILTIN(BUILT_IN_DWARF_SP_COLUMN,
 888                 "__builtin_dwarf_sp_column",
 889                 BT_FN_UNSIGNED,
 890                 ATTR_NULL)
 891 DEF_GCC_BUILTIN(BUILT_IN_INIT_DWARF_REG_SIZES,
 892                 "__builtin_init_dwarf_reg_size_table",
 893                 BT_FN_VOID_PTR,
 894                 ATTR_NULL)
 895 DEF_GCC_BUILTIN(BUILT_IN_FROB_RETURN_ADDR,
 896                 "__builtin_frob_return_addr",
 897                 BT_FN_PTR_PTR,
 898                 ATTR_NULL)
 899 DEF_GCC_BUILTIN(BUILT_IN_EXTRACT_RETURN_ADDR,
 900                 "__builtin_extract_return_addr",
 901                 BT_FN_PTR_PTR,
 902                 ATTR_NULL)
 903 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN,
 904                 "__builtin_eh_return",
 905                 BT_FN_VOID_PTRMODE_PTR,
 906                 ATTR_NORETURN_NOTHROW_LIST)
 907 DEF_GCC_BUILTIN(BUILT_IN_EH_RETURN_DATA_REGNO,
 908                 "__builtin_eh_return_data_regno",
 909                 BT_FN_INT_INT,
 910                 ATTR_NULL)
 911
 912 /* Variable argument list (stdarg.h) support */
 913 DEF_GCC_BUILTIN(BUILT_IN_VA_START,
 914                 "__builtin_va_start",
 915                 BT_FN_VOID_VALIST_REF_VAR,
 916                 ATTR_NULL)
 917 DEF_GCC_BUILTIN(BUILT_IN_STDARG_START,          /* backward compat */
 918                 "__builtin_stdarg_start",
 919                 BT_FN_VOID_VALIST_REF_VAR,
 920                 ATTR_NULL)
 921 DEF_GCC_BUILTIN(BUILT_IN_VA_END,
 922                 "__builtin_va_end",
 923                 BT_FN_VOID_VALIST_REF,
 924                 ATTR_NULL)
 925 DEF_GCC_BUILTIN(BUILT_IN_VA_COPY,
 926                 "__builtin_va_copy",
 927                 BT_FN_VOID_VALIST_REF_VALIST_ARG,
 928                 ATTR_NULL)
 929
 930 DEF_GCC_BUILTIN(BUILT_IN_EXPECT,
 931                 "__builtin_expect",
 932                 BT_FN_LONG_LONG_LONG,
 933                 ATTR_NULL)
 934
 935 /* Declare abort, exit, _exit and _Exit */
 936 DEF_LIB_BUILTIN(BUILT_IN_ABORT,
 937                  "__builtin_abort",
 938                 BT_FN_VOID,
 939                 ATTR_NORETURN_NOTHROW_LIST)
 940 DEF_LIB_BUILTIN(BUILT_IN_EXIT,
 941                 "__builtin_exit",
 942                 BT_FN_VOID_INT,
 943                 ATTR_NORETURN_NOTHROW_LIST)
 944 DEF_EXT_LIB_BUILTIN(BUILT_IN__EXIT,
 945                     "__builtin__exit",
 946                     BT_FN_VOID_INT,
 947                     ATTR_NORETURN_NOTHROW_LIST)
 948 DEF_C99_BUILTIN(BUILT_IN__EXIT2,
 949                 "__builtin__Exit",
 950                 BT_FN_VOID_INT,
 951                 ATTR_NORETURN_NOTHROW_LIST)
 952
 953 /* Declare malloc, calloc and strdup.  */
 954 DEF_LIB_BUILTIN(BUILT_IN_MALLOC,
 955                 "__builtin_malloc",
 956                 BT_FN_PTR_SIZE,
 957                 ATTR_MALLOC_NOTHROW_LIST)
 958
 959 DEF_LIB_BUILTIN(BUILT_IN_CALLOC,
 960                 "__builtin_calloc",
 961                 BT_FN_PTR_SIZE_SIZE,
 962                 ATTR_MALLOC_NOTHROW_LIST)
 963
 964 DEF_EXT_LIB_BUILTIN(BUILT_IN_STRDUP,
 965                     "__builtin_strdup",
 966                     BT_FN_STRING_CONST_STRING,
 967                     ATTR_MALLOC_NOTHROW_NONNULL_1)
 968